The 69-year-old passed away on Tuesday afternoon, suffering from a heart attack while playing hockey at the Pickwick Gardens ice rink in Burbank, Calif., with his son, Carter Thicke. He was transported to the nearby Providence St. Joseph's Medical Center around noon and was pronounced dead at the hospital.
E! News has spoken to an insider who was at the ice rink with Alan just hours before his tragic passing.
"He was in great spirits. His son Carter was skating with us as well," the source shared. "He was in a very happy mood [Tuesday] morning while they were dressing together."
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"Alan had taken a few shifts and seemed to be fine. Then during a shift, he seemed to falter, and skated to the bench," the source explained. "He was sitting on the bench, hunched over, then started experiencing pain. He laid down and started moaning loudly, holding his head. We called 911 and the paramedics came within two to three minutes. He was conscious and had stopped moaning by the time they took him out and to the hospital."
In fact, the insider says the paramedics seemed calm. "They were not frantic in any way, and we got the impression that they had stabilized him and he'd be OK."
Our source confirmed just why the world will be a little less bright without him, revealing, "Alan always had a smile and a kind word. He loved hockey and especially loved playing with Carter."